Sack-fastener



F. MARKWICK.

SACK FASTENER.

APPLICATION FILED I JEc. II, I9I9.

1,351,958, PatentedSept. 7, 1920.

FREDERICK MARKWICKLOF DETROIT, MICHIGAN.

SACK-FASTENER.

Specification of Letters Patent.

Patented Sept. 7, 1920.

Application filed December 11, 1919. Serial No. 343,993.

To all whom t may concern Be it known that I, FREDERICK Mknnwion, acitizen of the United States, Detroit, in the county of Wayne and Stateof h/liehigan, have invented certain new and useful Improvements inSack-Fasteners; and I do declare the following to be a full, clear, andexact description of thef invention,

such as will enable others skilled in the art' to which it appertains tomake and use the same.

My invention relates to improvements in metal sack fasteners and has forits objectto provide an extremely simple, inexpensive, and efficientfastener which can be easily applied and which may have such movement onthe neck of the sack as to effectively tighten.

lilith the foregoing in view, the invention resides in the novel articlehereinafter described and claimed and shown in the accompanying drawing.

Figure l is a side elevation of the fastener applied to a sack.

Fig. 2 is a sectional view of the device in fastened position.

Fig. 8 is view similar to Fig. 2, but showing the fastener released.

Fig. 4 is a perspective view.

In the drawing above briefly described, the numeral l designates asubstantially circular frame having a U-shaped offset 2 at one sideprovided with parallel arms 3'. This frame is constructed of a singlemetal rod or a length of wire bent to proper shape, and in the smallersizes of the device, the ends of the ire need notJ be connected, whilein larger devices, said ends may be electrically welded or otherwisejoined.

A fastening arm 4, preferably curved as shown, is formed of a length ot'wire or rod according to the sir/.e of the device, one end of said armbeing bent to form an eye 5 pivotally surrounding the frame l oppositethe offset 2, and free to slide around said frame as seen in Fig. 1. Theother end vof arm 4 is bent to form a hook 6 for engage` residino` atment with a latch loar 7 which extends between the arms 3 of theU-shaped odset 2.

Bar 7 is formed of a rod or a piece of wire and is bent into arch shapeas shown, with its ends bent to form eyes 8 slidably surrounding thearms Il. lNhen the latch har is in the position of Fig. 3, it allows thearm 4 to be swung to active position around the sack neck as in Fig. l,and said latch bar may then be slid inwardly and engaged with the hook5. The fastener is thus tightly held in place to close the neck of thesack, and the eye 5 is free to slide around the frame l so that thedevice may tighten after it is applied.

Release of the fastener is effected by pushing in on the arm 4, andsliding the latch bar 7 outwardly to release the hook 6. The entirefastener may then be removed unless it is sewed to the sack is desirablein the smaller sizes of the device.

rEhe article may be easily and inexpensively manufactured and marketedand may be used to great advantage, not only for sealing the neck ofordinary sack, but for closing both ends of a double-ended sack, leavingsufhcient material. projecting beyond the fasteners to form hand holdsby means of which even very heavily loaded sacks may be easily handled.

I claim:

A sack fastener comprising a substantially circular frame having aU-shaped offset at one side provided with parallel arms, an archedlatch-bar of circular cross section having eyes at its ends slidablysurrounding said arms, a longitudinally curved fastening arm of circularcross section having an eye at one end pivotally surrounding theaforesaid frame and free to slide thereon to allow tightening of thefastening arm, the other end of said fastening arm having a hookengageable with said arched latch-bar.

In testimony whereof I have hereunto set my hand.

FREDERICK MARKWICK.

